Hat Noppharat Thara–Mu Ko Phi Phi National Park head Woraphot Lomlim on Wednesday said officials installed tiny boundary buoys and red flags to warn tourists not to swim into Maya Bay, which has been closed indefinitely to allow a full recovery of the coral reef, mangrove forest and general ecosystem.

The move was because it was reported that some tour boats suggested tourists swim in Maya Bay on Koh Phi Phi. The tour boats could not come into the bay as boundary buoys had been installed to block them, Woraphot said.

The tour boats could not come into the bay as boundary buoys had been installed to block them, Woraphot said.